Whining about my dress

The fabric store accepted my return of the awful fish-print fabric, and I bought some purple fabric to replace it (and at a much better price).  I started this dress last Friday night and was able to finish it last night - impressive for me, considering I'm only home about an hour a day anymore.  So I finish the last seam, go to try it on...and it doesn't fit!!!  Well, it does fit, but not comfortably.  It seems that the fabric that was suggested to me for lining is just not stretchy enough, so the waistband doesn't have any give.  I'm pretty bummed - I was planning on wearing it tomorrow night to an event.  I still might wear it - I can get it on easy enough; the main issue is removal of the dress- that took about 10 minutes of major contortion and screaming.  If I have time tonight after dinner out with my mother-in-law and then a mad-cleaing session to prepare for our weekend house-guests, I might try to replace the lining with something stretchier.  Shouldn't be too hard, but we'll see... At least now I know better for the next attempt - I'm going to make a second version of this dress (different pattern view) for more casual occassions.